Occurrence of Reticulitermes grassei (Isoptera: Rhinotermitidae) on Cork Oaks in the Southern Iberian Peninsula: Identification, Description and Incidence of the Damage

This paper describes a new type of damage that affects cork oaks (Quercus suber L.) in the south of the Iberian Peninsula. The shape of the damage suggests that it could be caused by termites. The main aim of this research was to identify the causal agent of the damage, to describe it and to assess its presence and incidence in the area. Several field experiments were carried out in which specific baited-traps for termites were used. At the end of the sampling period, termites (identified as Reticulitermes c.f.grassei Clement) were found in most of the traps located under damaged trees. Descriptions related to the appearance, form and sizes of the galleries made by the termites are provided, as well as data on the infestation level and damage intensity. Differences with damage caused by other woodborer insects are also discussed.